Diamond Services v. Maritime, No. 23-20118 (5th Cir. 2024)
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The case revolves around a dispute over the eligibility of a dredging barge, the DB AVALON, to operate in U.S. waters. Federal law stipulates that only vessels "built in the United States" can dredge in U.S. waters, a determination made by the U.S. Coast Guard. Curtin Maritime Corporation sought the Coast Guard's ruling that the AVALON, which incorporated foreign-made spuds and a crane, could operate in U.S. waters. The Coast Guard ruled that the AVALON would be considered U.S.-built. Diamond Services Corporation, a competitor of Curtin, challenged this ruling as arbitrary and capricious.
The case was initially heard in the United States District Court for the Southern District of Texas. The district court deferred to the Coast Guard's interpretation of its own regulations and granted the Coast Guard summary judgment. Diamond Services Corporation appealed this decision.
The case was then reviewed by the United States Court of Appeals for the Fifth Circuit. The court affirmed the lower court's decision, agreeing that the Coast Guard's interpretation of its own regulations was reasonable. The court found that the regulations were genuinely ambiguous as to whether the crane was part of the AVALON’s superstructure. The court also found that the Coast Guard's interpretation fell within the regulatory zone of ambiguity and was reasonable. The court concluded that the Coast Guard's ruling was made by the agency, implicated the agency’s substantive expertise, and reflected fair and considered judgment. Therefore, the court affirmed the district court's decision to grant summary judgment for the Federal Defendants.
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